package com.matea.order.utils;

import java.util.Random;

/**
 * Created by Matea on 2018/11/18.
 */
public class KeyUtil {

    /**
     * 生成唯一的主键
     * 格式：时间+随机数
     */
    public  static  synchronized  String genUniqueKey(){
        Random random = new Random();
        Integer number = random.nextInt(900000)+100000;
        return  System.currentTimeMillis()+String.valueOf(number);
    }

}
